Chaeles l



(No Model.')

0. L. BRENISER.

RATGHET DRILL.

No. 336,470. Patented Feb. 16, 1886.

UNITED STATES PATENT OFFICE.

CHARLES L. BRENISER, OF JOHNSTO\VN, PENNSYLVANIA.

RATCHET-DRILL.

SPECIFICATION forming part of Letters Patent No. 336,470, dated February 16, 1886.

Application filed November 5, 1885. Serial No. 181,970. (No model.)

To all whom it may concern:

Be it known that I, CHARLES L. BRENISER, of Johnstown, in the county of Cambria and State of Pennsylvania, have invented certain new and useful Improvements in Ratchet- Drills; and I do hereby declare the following ter of the idler-wheels, so that the frame can be separated at this point and the wheels readily removed; third, the arrangement and combination of parts,which will be more fully described hereinafter, whereby a cheap, simple, and effective drill is produced.

Figure 1 is a side elevation, partly in sec tion, of the drill and the knee complete. Figs. 2, 3, 4., 5 are detail views of the same.

A represents a suitable base, which is rigidly secured to any suitable support, and B is the standard of the knee, which is connected to the base A by means of the clamping-bolt O. In the lower end of the standard B is placed a sleeve, D, through which the bolt 0 passes, and this sleeve D has ratchet-teeth formed on one end. In the base A is placed a similar sleeve, E, having ratchet-teeth on its inner end, and through which the bolt 0 also passes. IVhen the standard B is adjusted into any desired position, the clamping-bolt C is tightened into place, so as to lock the two sleeves D and E rigidly together, and thus hold the standard firmly in place. By means of this adjustment at the base of the standard B, the drill can be made to work at any desired angle. The knee F is passed down over the standard B, and secured in any position by means of the clamping-bolts 0. this knee is passed a screw, H, having a handwheel, I, on its outer end, and which screw passes through the holding device J, which is applied to the upper end of the screw K of the drill. This holding device J can be adjusted freely back and forth by turning the Through screw H, and adjusted laterally by the screw L, which passes through it at right angles to the screw H. This adjusting mechanism, formed by the two screws H L, is old, and no claim is here made to it. The holding device J has suitable grooves, a, made in its lower end, so as to catch over corresponding clutchflanges, 21, made upon the head of the screw K, so as to prevent the screw from turning around at any time while in operation. The screw K has a vertical groove, M, made in one side, and there is a corresponding spline or projection on the frame N to catch therein, for the purpose of preventing the frame being revolved while the drill is in operation. The screw K and frame N are to remain stationary while the drill is in operation. Fitting down over the top of the frame N is the sleeve 0, which forms a nut at its upper end for the purpose of engaging with the screw K, and which is swivelcd upon the frame N by means of the springcatch P, which is fastened at its upper end to the frame N, and which catches in agroove made in the inner side of the lower end of the sleeve 0, as shown. The lower end of the catch projects below the lower edge of the sleeve 0, so as to serve as a handle, and thus allow the sleeve and screw to be removed at any time from the frame. The outer surface of this sleeve 0 is milled, so that it can be turned by hand for the purpose of feeding the drill forward, and it is also provided with recesses into which a spanner or any other suitable tool may be made to catch The frame N is made in two parts, so that they can be supported 011 a line with the trunnions orjournals upon which the idlenwheels Q are placed. Inside of this frame N is placed the drill-spindle B, which has ratchet-teeth formed on its lower portion, and which passes up through the gearing, so as to have a bearing at its top against the frame N, and this hearing receives all of the end-thrust of the drill. Upon the drill-spindle It is placed the sleeve S, which has teeth formed on it, and which are turned in the opposite direction from those formed on the spindle R, and which sleeve has the teeth T, formed upon its upper end to engage with the idlers Q. The two idlers Q are placed upon trunnions or bearings, which form a part of the band or sleeve U, which is placed upon the top of the spindle, and which trunnions or bearings are supported at their outer ends in the frame N at that point where the two parts of the frame are secured together. These idlers Q, mesh with the bevelwheel V, which is rigidly secured to the up per end of the spindle R. Placed inside of the frame N is a collar, \V, which revolves freely around in the frame N, and to which the revolving sleeve X, which incloses the two ratchets, is fastened. The upper portion of this collar V is turned outward, so as to form a supporting-flange which rests upon the bottom of the frame N, while its lower screwthreaded end projects down through the opening in the bottom of the frame. This collar being merely supported in the frame, can be turned freely around in connection with the frame X. This sleeve W is dropped down into position in the frame N before the wheels are put in place, and serves to loosely connect the frames N and X together. This frame X forms the inner end of the operatinglever Y, which has two recesses formed in it, and in which recesses are placed the two spring-actuated dogs Z, which have their ends beveled in opposite directions for the purpose of em gaging with the two sets of ratchet teeth. NVhen the lever Y is reciprocated back and forth, these dogs Z alternately engage with the two ratchets and impart a constant rotary motion to the drill in the same direction. The drill is fed forward by means of the sleeve 0, placed upon the top of the frame N.

Having thus described my invention, I claim 1. The combination of the base, the standard,and the clamping-bolt,with the two sleeves connected, respectively, to the base and the standard, and which are provided with ratchet-teeth at their inner ends substantially as described.

2. The combination of the frame N, the sleeve 0, swiveled thereto, the catch P, and the screw K, provided with a groove for a spline upon the frame N to catch in, and thus prevent both the screw and frame from revolving while the ratchet is in operation, substantially as specified.

3. The frame N of a ratchet-drill, made in two parts and secured together on aline with the idler-wheels, substantially as described.

4. The combination of the frame N, the drill-spindle R, having gear V, the sleeve S, provided with a ratchet and gear-teeth, the idler-wheels Q, sleeve X, and lever Y, carrying the spring-actuated dogs Z, substantially as specified.

5. The combination of the frame N, made in two parts, the screw threaded ring WV, placed therein, and the frame X, formed upon the inner end of the leverY, and which is secured to the ring, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES L. BRENISER.

Vv itnesscs:

0. M. BRENISER, I. E. ROBERTS. 

